discord-ptb 0 -> 1
attrpath: discord-ptb
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] these 2 derivations will be built:
  /nix/store/985a4fysw4mpax1hqcy6k3qw49rj5r6c-discord-update-script.drv
  /nix/store/vmflf8mzg0vw27i8vhjh51lzxw5jd741-packages.json.drv
building '/nix/store/985a4fysw4mpax1hqcy6k3qw49rj5r6c-discord-update-script.drv'...
building '/nix/store/vmflf8mzg0vw27i8vhjh51lzxw5jd741-packages.json.drv'...

Going to be running update for following packages:
 - discord-ptb-0.0.78

Press Enter key to continue...
Running update for:
 - discord-ptb-0.0.78: UPDATING ...
 - discord-ptb-0.0.78: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/applications/networking/instant-messengers/discord/default.nix b/pkgs/applications/networking/instant-messengers/discord/default.nix
index f2d0e55e1871..3df4a8a9bce6 100644
--- a/pkgs/applications/networking/instant-messengers/discord/default.nix
+++ b/pkgs/applications/networking/instant-messengers/discord/default.nix
@@ -3,7 +3,7 @@ let
   versions =
     if stdenv.isLinux then {
       stable = "0.0.49";
-      ptb = "0.0.78";
+      ptb = "0.0.80";
       canary = "0.0.346";
       development = "0.0.17";
     } else {
@@ -21,7 +21,7 @@ let
       };
       ptb = fetchurl {
         url = "https://dl-ptb.discordapp.net/apps/linux/${version}/discord-ptb-${version}.tar.gz";
-        hash = "sha256-Fp94BsR6Fzy4tV+c5ToP9GKg6GC/TryGvHWLupew4Z8=";
+        hash = "sha256-y/ntnHIYcY35Jszh0PrFy395eJ5dBWwLNpzHMoSZuNA=";
       };
       canary = fetchurl {
         url = "https://dl-canary.discordapp.net/apps/linux/${version}/discord-canary-${version}.tar.gz";

An auto update branch exists with message `discord-ptb: 0.0.78 -> 0.0.79`. New version is 0.0.80.
The auto update branch does not match or exceed the new version.
Old version 0.0.78" not present in master derivation file with contents: { branch ? "stable", callPackage, fetchurl, lib, stdenv }:
let
  versions =
    if stdenv.isLinux then {
      stable = "0.0.50";
      ptb = "0.0.80";
      canary = "0.0.357";
      development = "0.0.17";
    } else {
      stable = "0.0.301";
      ptb = "0.0.109";
      canary = "0.0.477";
      development = "0.0.39";
    };
  version = versions.${branch};
  srcs = rec {
    x86_64-linux = {
      stable = fetchurl {
        url = "https://dl.discordapp.net/apps/linux/${version}/discord-${version}.tar.gz";
        hash = "sha256-6VXdVLk7Z8NGQMiSdgBRd8NIueUktkId6BXYKNABb+4=";
      };
      ptb = fetchurl {
        url = "https://dl-ptb.discordapp.net/apps/linux/${version}/discord-ptb-${version}.tar.gz";
        hash = "sha256-y/ntnHIYcY35Jszh0PrFy395eJ5dBWwLNpzHMoSZuNA=";
      };
      canary = fetchurl {
        url = "https://dl-canary.discordapp.net/apps/linux/${version}/discord-canary-${version}.tar.gz";
        hash = "sha256-sDwC5kPzAfvQmsrq6M/GPFtUaT9pNAEB4uGI5Mn3oXs=";
      };
      development = fetchurl {
        url = "https://dl-development.discordapp.net/apps/linux/${version}/discord-development-${version}.tar.gz";
        hash = "sha256-AmbaMVi/or+9QLuQO5u5btgKeKdrfo7bzZgGLILwgqo=";
      };
    };
    x86_64-darwin = {
      stable = fetchurl {
        url = "https://dl.discordapp.net/apps/osx/${version}/Discord.dmg";
        hash = "sha256-h7C1wCKtUGcMFUhoKVdD7Vq9TGUaXfmjlVhwmRdhqYw=";
      };
      ptb = fetchurl {
        url = "https://dl-ptb.discordapp.net/apps/osx/${version}/DiscordPTB.dmg";
        hash = "sha256-xxLnzELuI0X2r/weP1K2Bb51uRh1JjR72p7cXzy12Kc=";
      };
      canary = fetchurl {
        url = "https://dl-canary.discordapp.net/apps/osx/${version}/DiscordCanary.dmg";
        hash = "sha256-xEDtEtZNhOTtz+zRLLQBSeLbntlVAVQsocAGyAaVePM=";
      };
      development = fetchurl {
        url = "https://dl-development.discordapp.net/apps/osx/${version}/DiscordDevelopment.dmg";
        hash = "sha256-nZV9LK3eGpXK/2wQKJBn3K2Ud6uBk8aammkeE00rWx0=";
      };
    };
    aarch64-darwin = x86_64-darwin;
  };
  src = srcs.${stdenv.hostPlatform.system}.${branch} or (throw "${stdenv.hostPlatform.system} not supported on ${branch}");

  meta = with lib; {
    description = "All-in-one cross-platform voice and text chat for gamers";
    homepage = "https://discordapp.com/";
    downloadPage = "https://discordapp.com/download";
    sourceProvenance = with sourceTypes; [ binaryNativeCode ];
    license = licenses.unfree;
    maintainers = with maintainers; [ MP2E Scrumplex artturin infinidoge jopejoe1 ];
    platforms = [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" ];
    mainProgram = "discord";
  };
  package =
    if stdenv.isLinux
    then ./linux.nix
    else ./darwin.nix;

  openasar = callPackage ./openasar.nix { };

  packages = (
    builtins.mapAttrs
      (_: value:
        callPackage package (value
          // {
          inherit src version openasar branch;
          meta = meta // { mainProgram = value.binaryName; };
        }))
      {
        stable = rec {
          pname = "discord";
          binaryName = "Discord";
          desktopName = "Discord";
        };
        ptb = rec {
          pname = "discord-ptb";
          binaryName = if stdenv.isLinux then "DiscordPTB" else desktopName;
          desktopName = "Discord PTB";
        };
        canary = rec {
          pname = "discord-canary";
          binaryName = if stdenv.isLinux then "DiscordCanary" else desktopName;
          desktopName = "Discord Canary";
        };
        development = rec {
          pname = "discord-development";
          binaryName = if stdenv.isLinux then "DiscordDevelopment" else desktopName;
          desktopName = "Discord Development";
        };
      }
  );
in
packages.${branch}